Common Mistakes in Sewerage and Sanitary Submissions to PUB (BPU)

Centralised Services Department (Building Plan Unit)

wwwpubgovsg

Overview

bull Objective

bull Recap on sewerage submission stages

bull Recap on sewerage submission requirements

bull Common Mistakes during DCDP stage

bull Common Mistakes during Completion of Work stage

bull Guidelines amp Requirements

wwwpubgovsg

Objective

bull To highlight common mistakes to ensure higher quality of submissions

bull To ensure submissions are more complete so that approvals can be obtained faster

wwwpubgovsg

Recap on sewerage submission stages

DCCompletion of Work

(TOPCSC)

Design Stage As-built Stage

DP

PUB-DCCLR PUB-DPCLR PUB-BPU-COMPOFWORK

wwwpubgovsg

Recap on sewerage submission requirements

Please indicate the following items clearly in the DC form and DC plans

bull Existingproposed point of sewer connection serving the development

bull Total used water discharge rate (in Ls) with calculations

bull Lateral connections tofrom neighbour lot (where applicable)

bull Existingproposed sewers and manholes

bull Sewer setback

bull Top and invert levels of existingproposed manholes and inspection chambers (IC)

bull Location of RC trench used water pumping system in all relevant plans (where applicable)

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Development Control (DC)

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Overview

bull Objective

bull Recap on sewerage submission stages

bull Recap on sewerage submission requirements

bull Common Mistakes during DCDP stage

bull Common Mistakes during Completion of Work stage

bull Guidelines amp Requirements

wwwpubgovsg

Objective

bull To highlight common mistakes to ensure higher quality of submissions

bull To ensure submissions are more complete so that approvals can be obtained faster

wwwpubgovsg

Recap on sewerage submission stages

DCCompletion of Work

(TOPCSC)

Design Stage As-built Stage

DP

PUB-DCCLR PUB-DPCLR PUB-BPU-COMPOFWORK

wwwpubgovsg

Recap on sewerage submission requirements

Please indicate the following items clearly in the DC form and DC plans

bull Existingproposed point of sewer connection serving the development

bull Total used water discharge rate (in Ls) with calculations

bull Lateral connections tofrom neighbour lot (where applicable)

bull Existingproposed sewers and manholes

bull Sewer setback

bull Top and invert levels of existingproposed manholes and inspection chambers (IC)

bull Location of RC trench used water pumping system in all relevant plans (where applicable)

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Development Control (DC)

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Objective

bull To highlight common mistakes to ensure higher quality of submissions

bull To ensure submissions are more complete so that approvals can be obtained faster

wwwpubgovsg

Recap on sewerage submission stages

DCCompletion of Work

(TOPCSC)

Design Stage As-built Stage

DP

PUB-DCCLR PUB-DPCLR PUB-BPU-COMPOFWORK

wwwpubgovsg

Recap on sewerage submission requirements

Please indicate the following items clearly in the DC form and DC plans

bull Existingproposed point of sewer connection serving the development

bull Total used water discharge rate (in Ls) with calculations

bull Lateral connections tofrom neighbour lot (where applicable)

bull Existingproposed sewers and manholes

bull Sewer setback

bull Top and invert levels of existingproposed manholes and inspection chambers (IC)

bull Location of RC trench used water pumping system in all relevant plans (where applicable)

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Development Control (DC)

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission stages

DCCompletion of Work

(TOPCSC)

Design Stage As-built Stage

DP

PUB-DCCLR PUB-DPCLR PUB-BPU-COMPOFWORK

wwwpubgovsg

Recap on sewerage submission requirements

Please indicate the following items clearly in the DC form and DC plans

bull Existingproposed point of sewer connection serving the development

bull Total used water discharge rate (in Ls) with calculations

bull Lateral connections tofrom neighbour lot (where applicable)

bull Existingproposed sewers and manholes

bull Sewer setback

bull Top and invert levels of existingproposed manholes and inspection chambers (IC)

bull Location of RC trench used water pumping system in all relevant plans (where applicable)

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Development Control (DC)

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission requirements

Please indicate the following items clearly in the DC form and DC plans

bull Existingproposed point of sewer connection serving the development

bull Total used water discharge rate (in Ls) with calculations

bull Lateral connections tofrom neighbour lot (where applicable)

bull Existingproposed sewers and manholes

bull Sewer setback

bull Top and invert levels of existingproposed manholes and inspection chambers (IC)

bull Location of RC trench used water pumping system in all relevant plans (where applicable)

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Development Control (DC)

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission requirements

bull Detailed sewer plan indicating the following pipe details

ndash Setback from sewers to buildingsstructures

ndash Length

ndash Diameter

ndash Gradient

ndash Material

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manhole(s)

bull Longitudinal plan shall indicate the following details

ndash Depth of sewers and manholes

ndash Chainage

ndash Diameter

ndash Gradient

ndash Material

ndash Type of being and piling if constructed by open cut)

bull Detailed plans of manholes showing netting and intermediate platform (if applicable)

bull Detailed sewer plan shall be as much as possible in accordance to the approved DC plan

bull Any deviation should be highlighted in the cover letter and clearly indicated in the plans

bull QPrsquos and Ownerrsquos endorsements (where applicable)

Detailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission requirementsDetailed Plan (DP) ndash new sewers and manholes

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission requirements

bull DP clearance certificate for sewer work

bull Location plan detailed sewer plan amp longitudinal plan

bull Detailed sewer plan shall include the following details

ndash Pipe diameter gradient material

ndash Length of proposed sewers

ndash Type of bedding and piling (if constructed by open cut)

ndash Top and invert levels of manholes

ndash Position of manholes shall follow SVY21 coordinate cadastral base established by SLA

bull CCTV for newly constructed sewer (for diameter gt 600mm)

bull Hydrostatic test report (for diameter le 300mm)

Completion of Sewerage Work

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Recap on sewerage submission requirements

bull Cover letter with clear caption (as per BCArsquos requirement)

bull DP clearance certificate for sanitary work

bull As-built sanitary drawings (to be endorsed by QP)

bull As-built plan shall include

ndash the top and invert levels of existingproposed manholes and Ics

ndash Type diameter gradient material and length of proposed drainlines and sewer connection lines

bull Schematic sanitary drawing for high-rise building

bull As-built MampE drawings (to be endorsed by PE who obtained the DP clearance certificate for MampE work)

bull Hydrostatic test report ndash water tightness test

bull Air test report

bull Post-construction CCTV report and video (for reusing of existing sewer connection)

Completion of Sanitary Work

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Indicate the existingproposed point of sewer connection serving the development clearly in drawings

bull Indicate details of sewer connection like

ndash Connect directly to manhole or via y-junction

ndash Diameter and material of sewer connection pipe

Did Not Indicate Point of Sewer Connection

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Provide the used water discharge rate (in Ls) in page 2 of the PUB-DCCLR form

bull Attach calculations on how the rate is obtained (Refer to Annex 1 of Jun 2017 circular)

Did Not Declare the Used Water Discharge Rate Correctly

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during DCDP Stage

bull Setback is not measured from buildingsstructures on 1st storey only

bull Setback shall be measured from the outer most edge of the building structure including footings and overhangs to the centreline of the sewer

Setback measured from 1st Storey wall only

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during DCDP Stage

bull FFL of the development and the levels of the sanitary appliances floor traps and inspection chambers (usually on the compound) shall be constructed suitably higher than the top level of the manhole to which the sanitary drainline is connected

bull This is to avoid used water overflow from the inspection chamber floor traps and other sanitary appliances into the development lot due to sewer blockage

Finish floor level (FFL) of development lower than top level of IC and MH

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull No sanitary discharge pipes above

ndash Domestic water tankpump room

ndash Swimming pool

ndash Balancing tank

ndash Food and beverage area where food is stored prepared cooked and served

ndash Kitchen dining room bedroom study room

Wet over dry area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

PUBLIC UTILITIES ACT(CHAPTER 261 SECTION 72)PUBLIC UTILITIES (WATER SUPPLY) REGULATIONS

FIRST SCHEDULERegulations 4 (1) and (2) and 8 (1)REQUIREMENTS FOR WATER FITTINGS

16 mdash(1) No storage tank shall be installed in such a position that mdash(a) it is directly below any sanitary pipe floor trap sewer pipe reclaimed water pipe or waste pipe

No sanitary discharge pipes above domestic water tankpump room

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

SEWERAGE AND DRAINAGE ACT(CHAPTER 294 SECTIONS 51 AND 74)SEWERAGE AND DRAINAGE (SANITARY WORKS) REGULATIONS

3(1) (m) no sanitary plumbing system shall be laid mdash(i) above or across any potable water storage tank electrical transformer or switch gear

No sanitary discharge pipes above domestic water tankpump room

Fine not more than $15000

Continuing offence $500

everyday

wwwpubgovsg

Common Mistakes during Completion of Work Stage

Wet over dry area

bull no sanitary pipes from adjacent dwelling units shall be located within the dry areas (such as bedroom living room dining room study room etc) of a dwelling unit

bull no sanitary pipes serving toilet bowls shall be located within the

kitchen area of any dwelling unit

Case 1 A unit below a penthouse unit Owner saw sanitary pipe over bedroom

bull Several other units having the same issue bull They sought compensation from developer

bullCase 2 A unit at ground floor

bullBurst offset pipe of common discharge stacks at ceiling outside kitchen area

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull Ventilation stack shall not be terminated in any private premises or private roof area that is designed for use by occupants

bull Ventilation stack may be offset or connected to a common pipe of adequate size and extended for termination in the open air at the highest point of building or other suitable location that will not cause smell nuisance or health hazard to the occupants

bull have a horizontal distance of 3m from any window

Ventilation stack terminate at roof terraceBefore

After

wwwpubgovsg

Guidelines and Requirements

bull Submission guidelines and requirements can be obtained from our website at httpswwwpubgovsgcomplianceusedwaterlegislation

wwwpubgovsg

Common Mistakes during Completion of Work Stage

bull Ventilation stack shall not be terminated in any private premises or private roof area that is designed for use by occupants

bull Ventilation stack may be offset or connected to a common pipe of adequate size and extended for termination in the open air at the highest point of building or other suitable location that will not cause smell nuisance or health hazard to the occupants

bull have a horizontal distance of 3m from any window

Ventilation stack terminate at roof terraceBefore

After

wwwpubgovsg

Guidelines and Requirements

bull Submission guidelines and requirements can be obtained from our website at httpswwwpubgovsgcomplianceusedwaterlegislation

wwwpubgovsg

Guidelines and Requirements

bull Submission guidelines and requirements can be obtained from our website at httpswwwpubgovsgcomplianceusedwaterlegislation

20

THANK YOU